[UI] Shadow on the status bar

App bar is a solid thing, thus status bar and toolbar must have the same elevation level. This means there should be no shadow on the status bar from the toolbar and vice versa. See the spec. The first patch fixes this glitch.0_1465474690827_fix-status-bar-shadow.patch

By the way, I think the shadows are different in different activities now. For instance, when I tap an account, the app bar shadow is larger than in the accounts overview. But maybe this was already the case before the patch...

That's because AccountsActivity uses Toolbar widget while AccountActivity uses old action bar. The former makes a true shadow via the elevation API, the latter--a fake shadow via a drawable. Why Google can't make them look similar is a different question.